Update options

src/FishyFlip/ATProtocol.cs

@@ -115,6 +115,11 @@ public ATProtocol(ATProtocolOptions options)
     /// </summary>
     public bool IsSubscriptionActive => this.webSocketProtocol.IsConnected;
 
+    /// <summary>
+    /// Gets the base address for the underlying HttpClient.
+    /// </summary>
+    public Uri? BaseAddress => this.client.BaseAddress;
+
     /// <summary>
     /// Gets the Internal HttpClient.
     /// </summary>
@@ -170,7 +175,14 @@ public void UpdateOptions(ATProtocolOptions options)
         this.sessionManager.Dispose();
         this.webSocketProtocol = new ATWebSocketProtocol(this);
         this.webSocketProtocol.OnConnectionUpdated += this.WebSocketProtocolOnConnectionUpdated;
-        this.sessionManager = new SessionManager(this);
+        if (options.Session is not null)
+        {
+            this.sessionManager = new SessionManager(this, options.Session);
+        }
+        else
+        {
+            this.sessionManager = new SessionManager(this);
+        }
     }
 
     /// <inheritdoc/>
@@ -207,7 +219,7 @@ internal void OnUserLoggedIn(Session session)
     /// Sets the current session.
     /// </summary>
     /// <param name="session"><see cref="Session"/>.</param>
-    public void SetSession(Session session)
+    internal void SetSession(Session session)
         => this.sessionManager?.SetSession(session);
 
     private void Dispose(bool disposing)

src/FishyFlip/ATProtocolBuilder.cs

@@ -2,6 +2,8 @@
 // Copyright (c) Drastic Actions. All rights reserved.
 // </copyright>
 
+using System.Security.Cryptography.X509Certificates;
+
 namespace FishyFlip;
 
 /// <summary>
@@ -96,6 +98,17 @@ public ATProtocolBuilder WithSessionRefreshInterval(TimeSpan interval)
         return this;
     }
 
+    /// <summary>
+    /// Sets an initial session to use.
+    /// </summary>
+    /// <param name="session"><see cref="Session"/>.</param>
+    /// <returns><see cref="ATProtocolBuilder"/></returns>
+    public ATProtocolBuilder WithInitialSession(Session session)
+    {
+        this.atProtocolOptions.Session = session;
+        return this;
+    }
+
     /// <summary>
     /// Set the ATProtocol to use admin credentials.
     /// </summary>

src/FishyFlip/ATProtocolOptions.cs

@@ -53,6 +53,11 @@ public ATProtocolOptions()
     /// </summary>
     public ILogger? Logger { get; internal set; }
 
+    /// <summary>
+    /// Gets the initial session.
+    /// </summary>
+    public Session? Session { get; internal set; }
+
     /// <summary>
     /// Gets the instance Url.
     /// </summary>